984
FXUS01 KWBC 050620
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
119 AM EST FRI DEC 5 2025
VALID 12Z FRI DEC 5 2025 - 12Z SUN DEC 7 2025
...ACTIVE WINTER WEATHER PATTERN CONTINUES WITH SNOW EXPECTED FOR
THE MID-ATLANTIC, THE MIDWEST, AND THE ROCKIES THROUGH SATURDAY...
...MODERATE TO HEAVY RAINFALL FOR THE GULF COAST IS LIKELY THROUGH
THE UPCOMING WEEKEND...
...WELL BELOW AVERAGE TEMPERATURES CONTINUE FOR MANY AREAS FROM
THE NORTHERN PLAINS TO THE EAST COAST...
WINTER WEATHER WILL CONTINUE TO MAKE HEADLINES ACROSS MULTIPLE
REGIONS OF THE COUNTRY GOING INTO THE UPCOMING WEEKEND. THE FIRST
EVENT WILL BE THE ONGOING LIGHT TO MODERATE SNOWFALL ACROSS
PORTIONS OF THE MID-ATLANTIC THROUGH FRIDAY MORNING. THIS IS IN
RESPONSE TO A LOW PRESSURE SYSTEM CROSSING SOUTHERN GEORGIA INTO
SOUTH CAROLINA, WITH MOISTURE BEING ADVECTED WELL TO THE NORTH
INTO A MUCH COLDER AIRMASS CENTERED OVER THE NORTHEAST. A SWATH OF
1 TO 3 INCH SNOWFALL ACCUMULATIONS IS LIKELY BEFORE THE EVENT
CONCLUDES BY LATER IN THE DAY FRIDAY FROM THE SOUTHERN
APPALACHIANS TO CENTRAL VIRGINIA, AND LIGHTER TOTALS TO THE NORTH,
AND MORE OF A RAIN EVENT ACROSS NORTH CAROLINA. WINTER WEATHER
ADVISORIES ARE IN EFFECT THROUGH MIDDAY FRIDAY FROM EASTERN
KENTUCKY TO THE DELMARVA PENINSULA.
THE OTHER STORM SYSTEM THAT WILL BE PRODUCING WIDESPREAD SNOWFALL
WILL BE A PACIFIC LOW THAT MOVES INLAND ACROSS THE NORTHWEST U.S.,
AND INTERACTS WITH AN ARCTIC FRONTAL BOUNDARY THAT WILL BE
SITUATED ACROSS THE NORTHERN ROCKIES THROUGH SATURDAY. THE
SNOWFALL WILL BE MUCH HEAVIER THAN WHAT IS EXPECTED FOR THE
EASTERN U.S., WITH ONE TO TWO FEET OF ACCUMULATION LIKELY FOR THE
HIGHER TERRAIN OF NORTHERN IDAHO TO WESTERN MONTANA, AND THEN
EXTENDING TO THE WASATCH RANGE AND WESTERN WYOMING, AND THE
COLORADO ROCKIES. THERE SHOULD BE SOME ABATEMENT IN THE SNOWFALL
BY SATURDAY NIGHT AS THE LIFT AND MOISTURE EXIT THE REGION.
SNOWFALL BECOMES MORE LIKELY FROM THE DAKOTAS TO IOWA AND SOUTHERN
MINNESOTA BY SATURDAY AFTERNOON INTO EARLY SUNDAY AS THE LOW
PRESSURE SYSTEM REACHES THE MIDWEST STATES.
ELSEWHERE ACROSS THE CONTINENTAL U.S., DRY CONDITIONS ARE EXPECTED
TO CONTINUE FROM CALIFORNIA TO THE SOUTHERN PLAINS, AND EXTENDING
EASTWARD TO THE MID-SOUTH AND OHIO VALLEY. PERIODS OF MODERATE TO
LOCALLY HEAVY RAINFALL ARE LIKELY FOR THE LOWER ELEVATIONS OF
WESTERN OREGON AND WASHINGTON THROUGH EARLY SATURDAY AS THE
PACIFIC STORM SYSTEM ADVECTS A PLUME OF MOISTURE INLAND. ACROSS
THE GULF COAST REGION, A LINGERING FRONTAL BOUNDARY OFF THE COAST
WILL KEEP RAINFALL CHANCES ELEVATED THROUGH EARLY SUNDAY FROM
SOUTHEAST LOUISIANA TO THE FLORIDA PENINSULA TO SOUTHERN SOUTH
CAROLINA, WITH SOME 1 INCH TOTALS POSSIBLE IN SOME AREAS. IN TERMS
OF TEMPERATURES, IT WILL BE QUITE COLD FROM THE NORTHERN PLAINS TO
THE NORTHEAST WITH A BIG DIP IN THE JET STREAM AND MULTIPLE COLD
FRONTAL PASSAGES HERALDING THE ARRIVAL OF ARCTIC AIR MASSES. SOME
SUBZERO OVERNIGHT LOWS ARE LIKELY ACROSS PORTIONS OF THE DAKOTAS
AND INTO MINNESOTA, ESPECIALLY BY SUNDAY MORNING IN THE WAKE OF
THE NEXT ARCTIC FRONT.
HAMRICK
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